Connecting Rod 719810-23100 Compatible with Yanmar – Long-Life
Connecting Rod 719810-23100, Forged Steel, ±0.02mm Big End Bore — compatible with Yanmar 3TNE78 and 3TNE78A engines in Komatsu PC27MR-2, PC27MR-3, PC20R-8, and PC27R-8 mini excavators. Watch for big end bore elongation, small end bushing wear, and bolt stretch as replacement indicators during scheduled overhauls Replace rods as a full set to maintain balanced reciprocating mass when any single unit exceeds wear limits Plan con rod bearings, piston pins, and rod bolts together to avoid repeat teardowns Lifecycle replacement guidance and parts planning support provided for aging 3TNE78 fleet units.